Fact Directory

Explore the latest fascinating facts freshly added to our collection!

When was the first telephone call?
Technology
The first telephone call took place on 10 March 1876, when Alexander Graham Bell spoke to his assist... Read more
Where was the first McDonald's Store?
History
The first McDonald’s store, originally opened in 1940 by Dick and Mac McDonald, is located at 1398... Read more
How High Can A 737 Fly?
Aviation
The service ceiling of modern Boeing 737NG and 737MAX aircrafts is 41000ft (12496.8m). Earlier 73... Read more
How Deep Can Fish Finders and Depth Finders Go?
Marine
Most modern general purpose CHIRP depth and fish finders can reliably operate down to ~900ft (274m).... Read more
Best Time to Visit Kathmandu for Clear Skies, Sightseeing, and Himalayan Treks
Travel
The best times to visit Kathmandu are March to May and September to November, when the weather is cl... Read more
Linear vs Switching Power Supplies
Technology
Both linear and switching power supplies serve the same purpose of converting AC to DC and reducing ... Read more
Is WebP better than JPEG?
Technology
Developed by Google in 2010, WebP is a next generation image format designed to reduce file size whi... Read more
What and Where Is Zion?
Religion
Zion originally referred to a hill in Jerusalem, where King David captured a Jebusite fortress and r... Read more
What Is a "No-Salute Zone" in the Military?
Military
A "no-salute zone" or "no-salute area" is a designated space where military personnel are not requir... Read more
What is 'dead man's curve'?
Aviation
"Dead man's curve" is a danger zone for helicopters where flying too low and too slow can make it ne... Read more